A collection of valid and invalid 3mf files for testing 3mf readers, writers, and validators.
cd spec/test_files/failing_cases
unzip test_case_14.3mf -d test_case_14
rm test_case_14.3mf
# edit files within folders
cd test_case_14
zip -r ../test_case_14.3mf *
cd ..
rm -rf test_case_14